99.36: What happens to lx5( c-utnfkqcgw(04the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depen f3,f.sqd: flnd on the quantity of matter present. Which of the following properties is NOT an intrinsic properfnf:l, . fs3qdty?

  04.16: A 20 kg boulder rests on the su b56(w x /yo4eem9ph.w gb:zedrface of the Earth. Assume the Earth has mass w w 9geohbme/(ezx5:6y p4bd. $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Eartd+ldytek asc44 c8y:4h. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth ma4e4:8cd c+datks4l yyss is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object 8sr -l9nd-xx0jcy yi:’s velocity to increase while its acceleration decrec: -j8sxy rdiy x90n-lases?

  00.11: A certain partq(h tn 1dn s5vnxp12b /qtuk*+icle undergoes erratic motion. At every point in its motion, the direction of tu/+qbn1*tnx h51nqvt2dpk s (he particle’s momentum is ALWAYS

  17.14: A block is suspendeu8lkp) (5mvr8v a4, q64vxy)vr(ngersa ys5sd in the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for 5ssn 5g8rs(k,(vpy ))vluye4ma 6 va48rxvq ra short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations is the net xu36in7om/ 6q8wvbfff( ,ipm force constantly zerofu 8fmq(x o6/i iv3 67wbmn,pf on the object?

  13.28: An object is in free fall close to the ground. A person interus -+gwnv2rayxsgp85e ; u/n*,0vp cuvenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the obje xv-c *8+;pnsu yv5e,gp/ sa2 0rnwuugct as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has t y-t /1a7aap9dahv7 zahree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Thea71 daa y/va7-z9thap magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can bejxfuq)5;7 w2dfrj1yy) 9dyhd 0 nfx 3k combine to form a resultant with a magnitude of which of thy f3ydwf9qxn)u71x)0r5;ykfdj jd2 h e following

  10.06: Which of the following statements is most closely associated with Nypzfl7v5qckr rj:; (3ewton’s Third Law of Motion3cqf :lpk(5y;j zr7vr ?

  95.06: The reaction force doery/h hj geg5bx- b*b:6s not cancel the action force because:

  14.14: A box rests on the floor of an elevaqk-tqru 8;l c )iyfk4xf3ye+* tor. The elevator is accelerating upward. W*ytl8)f-k y4;+irufxcq 3kqe hich one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the (/exww(m 0 ximair with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair m(/ww x mi(e0xforce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batter jqzqo naa1617swings and hits the ball. The magnitude of the force t6azjo q7a1nq1 hat the ball exerts on the bat is always

  11.13: A physics book sits d1 aiajl-f 26jf1f(5w k+dpurat rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the 5da+u1ar6dj(pj 2k1wl i -f fftable exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an experime/j +avnnc5q2jnt related to Newton's Second Law. The collected n2vq5j+ /cjna data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at 7i6nd jh*3h d:f)wyz rthe same time the mass of the object was halved,then the acceleratz f hy6 dr7ni)wjh*:3dion of the object is

  96.15: A car whose mass is 1500 kgy ;plupi/.b/yg52(pn rg/ ipc is accelerated uniformly from rest to a speed of 20 m/s .y/;npry5gu/c2gl (i p bp/pi in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is ma0wwat wd/y38nv2atm ;d6w 5())rj li fxr z;traveling down the road. The mass of the trailer is 4 times the t;/3r(na ) amd8y6wa jmwvw rt0zl5)fx;id2wmass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-trail51xy:lft oqvhc9ylz. 0dv +*gksxp /lh88b. her trucks generally accelerate much more slowlyx89z:hc qlgo*. lh y1vxlhkvbp8+ .t sy05/fd that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a.d abzn*hrxamz ::o7) 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent moti7 :hazonarmz*xd b: .)on?

  00.13: An object near the surface of the earth with a weight of:zd.ve:q mya jp;d5 1tnsmbqs5ub9:6 100 newtons is acce ;a9ut5 :m:jdvbb1ezydqn6q. ss : 5pmlerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerp pquf44b w3gw7v)oz- ated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s afterp4)-w4qgwp ouzbv7 3f beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizon m5m r)zvv 0;ybzz::hztal floor before coming to resv bm:0z;zzrmhzvy :5) t. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizo. s;4 tfhc-q7vmw/x 1iy :bluental floor before coming to rest. The coefficient o/7qutblm-v ihe .x14wsy c:;ff friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pusqoka)th/0 9c ufw) sy(hes dire)wka(t0f9 hs q /)uyocctly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initiallj4orzao c buy0im9 5o s)-5ye*y moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic frictio4 9)brcou as-55oyzi my*oje0n between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speqnpl/1h0n4qs.firc 9qs;m t8i 0p8vt ed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The com vsp pnr08n4; qcqt8.iq f 1hi9/lst0efficient of kinetic friction between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch ofsqtgm,db0 0+s ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ . s,d tsqb0m+g0

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergenc2iucrdl aj7( 8l7mp(vv4pj. i y stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if ipau j( c747(8ilm .vlpdj2rvit had been traveling twice as fast?

  99.39: The driver of an automobilekug*; t:nv8bk must carefully control each of the following devices. Which of these devices can caus*kukt vb ;n8:ge an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 1yi,w:sd +cvu 1,+l zyv5000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 mu +w y1,isdvly:+zv c,/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person calle4 fp5mvc-f45 u( tyfu /cf0(zvilpu2ud Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces emz4uv/p (lfc-fu5ufu0it4fp5( v2 cyxerted on the box.

  02.27: The diagram below shows three roller yzylsul + 0g98coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation 8ulglz09+yy sand moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows thrghj34m (8pn*+wgqhp;c8sk yv ee roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at th8 3gkp;n+hyg*(wc8 4j vh pqsme same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollerc2s v nsjh *qixckcq-4g59rb *+80vck voaster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the ck 5jx* rvk *+sqi2cnscg-vvbh0 89c4 qart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acrosslbnsbk2y -i2fj- 96bt the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope isy2tibl6-2k9 fb n-bjs required to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed again c /: s vir/+sswva2qbiv0o3ad:10 linst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of staticrvs d0 cqv2n3wvi//a:s+i 1loai0 s: b friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patgta)1-+ vvb6kw0vy+h n 4aqsr ch of grass with a constant speed by applying a force+vqknrw-y+460 asgv1th a)bv P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Whi (ppe:;eqsw yb9dw78qjc3l1ych of the following statements concerning this situldw9:ec jq8;3 yeq y 7p(sw1pbation is CORRECT?

  06.15: A crate of toy 6rhw,uaqxhm 4/5k h/js remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for h5mqwhk4h rj/x6u,a/ the crate’s increase in speedup the hill?